The ores of mercury



(No Model.)

. E. GyHALL 8v M. D. HASKINS FURNACE FOR TREATING THE ORES 0F MERCURY.

No. 256,677. Patented'A r. 18,1882.

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UN rr an STA-res ATE T. OFFICE EDWARD e. HALL, or HEALDSBURG, AND MYRON1). HAsKIus, on GUERNEVILLE, CALIFORNIA.

FURNACE FOR TREATING THE ORES "OF MERCURY.

SPECIFICATION forming part of Letters Patent No. 256,677, dated April18, 1882.

Application filed July 23,1881. (No model.)

To all whom it may concern:

Be it known that we, EDWARD Gr. HALL, of Healdsburg, in the county ofSonoma and. State of California, and MYRON D. HASKINS, of Guerneville,in the county of Sonoma and State oi'G-alifornia, haveinvented a new andImproved Furnace for Treating the Ores of Mercury, of which thefollowing is a specification.

Figure 1 is a vertical section of our improved furnace. Fig. 2 is avertical section on line a; :r in Fig. 1. Fig. 3 isa plan view. Fig. 4is a horizontal section on lineyyin Fig. 2. Figs. 5,6, and 7 are detailviews of the cam-shaft and cam.

Similar letters of reference indicate corresponding parts.

Our invention relates to improvements in furnaces for treating the oresof mercury; and it consists in a novel conslruction' and arrangement ofparts, as hereinafter described, and pointed out in the claims.

. Referring to the drawings, A is the outer wall of the-furnace, withinwhich is formeda tireplace, B, having an arched top, 0.

Above the top of the fire-place B there are two similar chambers,'D,having inclined floors a and arched tops I). Passages L lead from thesechambers to the condensers.

Above the chambers D there is a cylindrical chamber, E, having afunnel-shaped bottom, 0, from which achute, d, leads to the pipes c,which communicate with the chambers D. In

the chute at there is a valve,], and the pipes A vertical shaft, F,is'journaled centrally in the chamber E, and is slotted to receivesplines in the boss or hubs of the cams G, said hubs being divided sothat they may be readilybolted together on the shaft. An arm is placedin each space between the diaphragms.

' A flue, H, surrounds the chambers D, and communicates with an annularspace or flue, I, that surrounds the chamber E. A number of passages, j,lead from the fire-place B to the flue H for leading away the productsof combustion,and auxiliary furnaces J are arranged in the space betweenthe contracted portion of the chamber E and the annular wall L, whichprojects from the upper surface of the chambers D and surrounds thecontracted part of the chamber E, for imparting heat to the said chamberin addition to that received from the fire-place B through the flue H.The chamber E is stayed by a number of fire-bricks, 7c, placed in theannular space I. These bricks also serve the purpose of equalizing anddistributing the ascending heat generated in the fire-places.

Chutes K, having suitable stop-valves, extend from the lower portion ofthe floor of the chambers D through the wall A for discharg ing thedepleted ore. i

The manner of using our improved furnace is as follows: The chamber E isfilled with ore and lime in the usual way and the cams Gare rotated. Assoon as the ore becomes partly roasted itis discharged into one of thechambers D by opening the valve fand one of the valves 9. In its fall itbecomes separated and broken up, so that the mercury is easily liberatedwhen subjected to heat in the chamber D, and is driven ofi' and conveyedthrough the passage 1) lo-the condensing-chamber. The chambers D areeach made sufficiently large to contain two full charges from thechamber E. By means of this arrangement the ore can be subjected to anintense heat in the chambers D for several hours longer than the chargehe chamber E, having a funnel-shaped bottom arranged above the saidchambers, and provided with the diaphragms h, projecting from oppositesides of the chamber nearly across the same, and the revolving arms G,and communicating with the said chamber at its bottom, substantially asand for the purpose set forth. V

2. In a furnace for treating ores of mercury, the combination, with thechamber E, having a-funnel-shaped bottom and the fire-place B, of thechambers D, having inclined floors, and communicating with the saidchamber, and arranged between the said chamberand fire-place,substantially as and for the purpose set; forth.

3. In a furnace for treating ores of mercury,

the combination, with the chambers D, the annular wall L, and thechamber E; having its lower part contracted, of the furnaces J, arrangedin the space formed by the said annular wall and the lower contractedpart of the chamber, substantially as and for the purpose described.

4. The annular space I, surrounding the chamber E, and connected withthe flues H and furnaces J, as and for the purpose herein shown anddescribed.

EDWARD G. HALL. MYRON DOUGLAS HASKINS.

Witnesses:

PETER GRIEST, H. K. BROWN.

